Sinapinic acid
Sinapinic Acid[edit | edit source]
Sinapinic acid is a naturally occurring phenolic compound found in various plants. It is a type of hydroxycinnamic acid, which is a class of phenolic acids. Sinapinic acid is known for its antioxidant properties and is commonly used in mass spectrometry as a matrix for matrix-assisted laser desorption/ionization (MALDI).
Chemical Structure and Properties[edit | edit source]
Sinapinic acid has the chemical formula C11H12O5. It is characterized by a phenylpropanoid structure, which includes a phenyl ring and a three-carbon side chain. The presence of methoxy and hydroxy groups on the phenyl ring contributes to its chemical reactivity and biological activity.
Occurrence[edit | edit source]
Sinapinic acid is found in a variety of plant sources, including Brassica species such as mustard and rapeseed. It is also present in cereals and grains, contributing to their nutritional and health benefits.
Biological Activity[edit | edit source]
Sinapinic acid exhibits significant antioxidant activity, which helps in neutralizing free radicals and reducing oxidative stress in biological systems. This property makes it a valuable compound in the prevention of chronic diseases such as cardiovascular disease and cancer.
Applications in Mass Spectrometry[edit | edit source]
In the field of analytical chemistry, sinapinic acid is widely used as a matrix in MALDI mass spectrometry. It assists in the ionization of large biomolecules, such as proteins and peptides, allowing for their analysis and identification. The use of sinapinic acid in MALDI has revolutionized the study of proteomics and biomolecular research.
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